Harrow.



.P'ATENTBD SEPT. 10, 1907.

E. L. GUDABAGK.

HARROW. APPLICATION FILED BBP'I. 27, 1905.

2 SHEETS-SHEET 2.

.52901 1 Uwdwbac/Qjiwanhn W/ZbwSSeLY w MW 1: NORRIS PETERS :0,WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

EDGAR L. OUDABAGK, OF BUFFALO, NEW YORK, ASSIGNOR TO THE LANEMANUFACTURING COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF ARIZONATERRITORY.

HARRow.

To all whom it may concern:

My invention relates to harrows, and more particularly to that class ofharrows known as the springtooth type; it, however, has many features ofconstruction which may be used on peg-tooth or other harrows; and whileI have illustrated my invention as applied to spring-tooth harrows it isunderstood that such illustration discloses merely a representative wayof putting the invention into use.

The primary object of my invention is the production of a spring-toothharrow in which the toothbars are aflixed to levers pivoted to theharrow-frame.

Otherobjects are to maintain the tooth-bars on a plane or planes abovethe harrow-frame; to provide novel clips for securing the cross-bars tothe supportinglevers, and the spring-teeth and adjusting-mechanism tothe cross-bars; to provide novel adjusting-mechanism, and to otherwiseimprove on harrows now in use.

With these ends in view, the invention consists in the novelconstruction, arrangement, location and combination of parts to behereinafter described and particularly pointed out in the appendedclaims.

In the drawings,-Figure 1 is a side elevation of a harrow embodying myinvention, the draft appliance being omitted. Fig. 2 is a plan view ofone section of a harrow, which may be used singly or in connection withanother section, as is common. Fig. 3 is an enlarged longitudinalsection taken on line 'w'w, Fig. 2. Fig. 4 is an enlarged transversesection through the frame, taken on line 0;9J, Fig. 1, looking to therear. Fig. 5 is an enlarged section taken on line yy, Fig. 2. Fig. 6 isan enlarged cross-section taken on line zz, Fig. 3. Fig. 7 is anenlarged detached perspective view of one of the fastening clips. Fig. 8is a perspective view of the inner end of the teeth adjusting screw andthe connecting piece pivoted to the clevis thereof.

Referring to the drawings in detail, like numerals of reference refer tolike parts in the several figures.

The numeral 1 designates the harrow-frame, which may serve as onesection of a sectional harrow, or as a complete frame, as may bedesired. The frame comprises side bars 2 and 3, which I will designatethe outer and inner bars, respectively, to distinguish the outer orinner side of the frame in the event of its being used in connectionwith another frame to form a sectional harrow; 4 is the front cross-barconnecting the front ends of the side bars, and 5 the rear transversebar which is secufed to the rear ends of the side bars by rivets 6, orthe like. The front ends of said side bars Specification of LettersPatent.

Application filed September 27, 1905. Serial No. 280,288.

to the supporting-levers.

Patented Sept. 10, 1907.

are curved upward, as shown in Fig. 1 to maintain the front bar in anelevated position so that it may pass over weeds or other vegetablegrowth, and over rocks or other objects without offering the leastobstruction to the free forward movement of the harrow.

The outer-forward angle, designated by the numeral 7 is curved, so thatwhen coming in contact with a tree, stone, or other obstruction, theharrow is deflected, thus avoiding sudden jars or shocks which wouldstrain the draft-appliance, which for convenience is omitted in thedrawings, but which may be of any common construction and secured to theframe in any practicable manner. The inner-forward angle of the framemay be at a perfect right-angle, so that when the frame is used inconnection with a second frame to form a sectional harrow, the spacebetween the two frames at the front ends thereof, is not larger thannecessary. The rear transverse bar 5 is arched, so that it also clearsweeds, stones, or other like obstructions in the path of the harrow.

8 designates the tooth-bars which are of channel formation incross-section and supported on levers 9 pivotally secured to the sidebars of the frame. Each of said supporting-levers extends upward andrearward.

and terminates in a fiat substantially horizontal portion 10 on whichthe tooth-bars are supported. Clips 11 are' provided as a means forattaching the tooth-bars to said levers, each clip fitting over atooth-bar and consisting of a flat piece of metal bent in substantiallyU-shape and having at each end, an opening 12 through which the ends ofthe supportinglevers 9 are passed. In the channels of the tooth-bars andwithin the clips are nuts 13 whose tapped openings register withapertures 14 in the clips, and by reason of their lying in the channelsof said bars, the walls or webs forming the channels, prevent turning ofthe nuts. passed through the apertures 14 in the clips and through thenuts registering therewith, and impinge against the tooth-bars, thuscausing the clips to be drawn upward to clamp the bars firmly to thesupporting-levers.

Arranged on each tooth-bar at uniform intervals are spring-teeth 16,preferably of the common G-shape, which are secured to said bars bymeans of clips 17 similar in construction to the clips 11; the innerends of the teeth being passed through the clips in like manner Theclips 17, however, secure the teeth to the tooth-bars, while the clips11 serve to secure the tooth-bars to the supporting-levers.

Aflixed to each tooth-bar is an upright arm 18 terminating at its lowerend in a flat horizontal portion 19 that lies against the tooth-bar andpasses through the openings in the ends of clips 20, which are similarin construction to the clips 11 and 17 and secured to the Bolts 15 areright arm a swivel-nut 24 is secured, the same havingintegral studs 25that enter apertures 26 in the sides of said arm. An adjusting-screw 27has threaded engage ment with said swivel-nut and extends downward andforward for connection with the intermediate toothbar. The rear or outer'end of said screw is provided with a suitable handle or crank 28 foroperating the same, and its forward or inner end is reduced in diameter, as at 29, and passed through a clevis 30, which is secured to saidfeed-screw by upsetting the reduced end of the latter, thus permittingthe screw to rotate in said clevis. Glamped underneath the intermediateupright arm and the corresponding clip is a connectingpiece 31 by meansof which the adjusting-screw is con nected to the tooth-bar. Said piece31 has perforated lugs 32 at its rear end which lie within said clevis,a bolt 33 serving to connect the latter to said connecting piece.

In adjusting the teeth, it is simply necessary to revolve theadjusting-screw, whereupon the lever supported toothbars, connected byrod 22, are raised and lowered in unison, their line of travel being inarcs of circles having the pivoted points of the supportinglevers astheir centers. In this manner the teeth are raised or lowered withoutperceptibly turning the tooth-bars, and the acting or soil-working endsare therefore given but a slight change of angle, in contradistinctionto a sharp turn, as has been the practice when rotating the tooth-bars.The tendency of the teeth to dig into the ground is thereby avoided, andthe harrow is drawn with greater ease, and is more effective, whilemaintaining at all times the spring so desirable in implements of thiskind.

Having thus described my invention, what I claim is,-

1. In a harrow, the combination of a frame, supportinglevers pivotallyailixed to said frame, tooth-bars carried on said supporting-levers,clips fitting onto said tooth-bars and having openings at their endsthrough which the free ends of said supportingdevers pass, and means tosecurely clamp the tooth-bars and said supporting-levers within saidclips.

2. In a harrow, the combination of a frame, supportinglevers pivotallysecured to said frame, channeled toothbars carried on saidsupporting-levers, U-shaped clips fitting onto said channeled tooth-barsand having Openings at their ends through which said supporting-leverspass and apertures between their ends, nuts lying in said channeledtooth-bars between the same and said clips, and bolts passed through theapertures in said clips and through said nuts and impinging against thetooth-bars to cause the latter and the supporting-levers to be securelyconnected.

3. In a harrow, the combination with a frame, of a plu rality oftransverse tootlrbars supported for movement on said frame, harrow-teethsecured to said tooth-bars, upright arms having fiat horizontal portionsat their lower ends, clips fitting onto said tooth-bars and havingopenings through which the flat portions of said upright arms arepassed, clips for securely fastening said upright arms to the toothbars, a connection between said upright arms, and means for adjustingthe teeth.

4. In a harrow, the combination with a frame, of supporting-leverspivotally secured to the frame, tooth-bars secured to the free endsofsaid supporting-levers, liarrow teeth secured to said toothbars, aconnection between said tooth-bars to cause them to move in unison, anadjusting screw having a swivel connection with one of said toothbars,and a nut supported on a second tooth-bar through which said adjustingscrew is threaded.

In a barrow, the combination with a frame, of supporting-levers pivotedto said frame, toothbars secured to the free ends of saidsupporting-levers, U-shaped clips securing said tooth-bars to saidsupporting-levers an upright arm for each tooth-bar having a flatextension at its lower end, said clips having openings through which theflat portions of the upright arms are passed, ,a rod con meeting saidupright arms, a connecting-piece held in one of said clips, a clevispivotally connected to said connect ingpiece, an adjusting-screw havingone end revolubly affixed to said clevis and its other end provided witha handle, and a swivel-nut secured to asecond uprightarm and throughwhich the adjusting-screw is passed.

In testimony whereof, I have affixed my signature in the presence of twosubscribing witnesses.

EDGAR L. CUDABACK.

Witnesses JULIUS LAXK s. EMIL NnUILxnT.

